Anker 521 PowerHouse 256Wh | 200W AC Outlet | LiFePO4

The 521 answers an Egyptian question pocket banks cannot: "I need a wall-socket during a Cairo summer blackout / Sahel weekend — not just phone top-ups." CRITICAL SKU MAP. (A) A1720 / 521 = this sheet — 256Wh LiFePO4 + ME 200W pure-sine AC + 60W USB-C — NOT flyable. (B) A1721 / 522 = different MPN on the same product-page picker (299Wh / 300W class) — do NOT transfer this bench. (C) A1751 / 535 = larger sibling (512Wh / 500W class). (D) A1336 / 737 = USB pocket banks ≤100Wh for cabin travel with higher laptop PD (100–140W) but NO AC outlet. Six realistic fits from measured 221.4Wh AC usable. RIGHT FOR: (1) LOAD-SHEDDING APARTMENT: Wi-Fi router (~8–12W) + LED lamp (~9W) + phone trickle (~5W) ≈ 22–26W → 221.4Wh ÷ 22–26W ≈ 8.5–10 h est. — enough to ride a typical multi-hour Cairo cut without killing the router. (2) HOME OFFICE BLACKOUT: MacBook Air on its 30–35W brick via the AC outlet ≈ 6–7 h light editing from measured Wh; USB-C 60W can feed the Air directly without the brick if you prefer one cable. (3) BUILDING GUARD / SHOP CCTV backup: small DVR + 2–4 PoE/Wi-Fi cameras often sit in the 40–80W band — expect ~3–5 h from 221.4Wh; verify YOUR draw with a Kill-a-Watt / PZEM before promising overnight coverage. (4) SAHEL / MARINA / WHITE DESERT camping: charge phones + camera + run a 12V cooler briefly from the car socket (12V/10A rated) or a small pure-sine appliance under 200W. (5) CPAP / medical device users: Anker documents Power Saving Mode off for continuous loads like CPAP — still match YOUR device continuous + surge watts to the 200W AC limit and ask the device maker before relying on it medically. (6) SOMEONE COMPARING TO A1336/737: those are USB power banks for travel; the 521 is a mini UPS with a real AC outlet. WRONG FOR: (7) AIR TRAVEL — 256Wh > 160Wh IATA passenger limit (red-flag: never pack this as cabin luggage). (8) Kettle / hair dryer / microwave / large AC split — all far above 200W continuous. (9) Buyers who only need phone charges in a jeans pocket — pay for A1336/737 instead of hauling 4.3kg. (10) Anyone expecting the on-page picker's 522 or 535 performance from this SKU. HEAT: discharge rating 0–40°C (Anker Solix). Cairo July high averages ~35°C (WeatherSpark) — keep the station shaded; inverter heat stacks fast in a closed car boot. Our sample hit 48.6°C top grille after 20 min @~198W AC (28.3°C ambient) — warm; keep vents clear. ELECTRICITY: recharging ~256Wh at ~65W DC input draws ~0.30–0.35 kWh at the wall after adapter losses; EgyptERA Sept-2024 tariff (through March 2026) ≈ 20–80 piastres per full recharge depending on tier. AUTHENTICITY: match MPN A1720 / A1720Z21 on carton + LCD model string; reject unverified 3.7kg listing mass (Anker Solix 4.34kg).